Enjoyed all of the exhibits but disappointed in a ...

Enjoyed all of the exhibits but disappointed in a couple of items. 1. Went to the Self-serve ticket kiosks to purchase a seniors ticket. Waited in a long queue only to find out that I couldn't buy seniors tickets there but had to line up at a very long line up to show proof of age. How us it that you can buy seniors tickets online but not at the self-serve. What is the difference, ?
2. Lack of signage at the facility to direct people where to get a bus to Appolo. Not everyone can read a map easily and signage on the grounds would have eased our confusion.